java – 数据绑定;视图标签不正确,Android
发布时间:2020-12-15 02:13:54 所属栏目:Java 来源:网络整理
导读:我在数据绑定 Android教程中遇到困难.我发现我将数据绑定到视图时遇到问题. public class DataView extends FrameLayout { private DataViewBinding binding; public DataView (Context context,AttributeSet attrs) { super(context,attrs); } @Override pr
我在数据绑定
Android教程中遇到困难.我发现我将数据绑定到视图时遇到问题.
public class DataView extends FrameLayout { private DataViewBinding binding; public DataView (Context context,AttributeSet attrs) { super(context,attrs); } @Override protected void onFinishInflate() { super.onFinishInflate(); binding = DataViewBinding.bind(this); <--- } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); DataSource dataSource = DataSource.get("Data View"); binding.setDataSource(dataSource); <--- } } data_view.xml <layout> <data> <variable name="dataSource" type="com.example.kaz.simplebindingdemo.DataSource" /> </data> <com.example.kaz.simplebindingdemo.DataView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingTop="16dp" tools:showIn="@layout/content_main" tools:context=".DataView"> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:text="@{dataSource.message}" /> </com.example.kaz.simplebindingdemo.DataView> </layout> 在渲染中我得到了异常: java.lang.RuntimeException: view tag isn't correct on view:null at com.example.kaz.simplebindingdemo.databinding.DataViewBinding.bind(DataViewBinding.java:123) at com.example.kaz.simplebindingdemo.databinding.DataViewBinding.bind(DataViewBinding.java:119) at com.example.kaz.simplebindingdemo.DataView.onFinishInflate(DataView.java:22) at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:844) at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70) at android.view.LayoutInflater.rInflate(LayoutInflater.java:811) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) at android.view.LayoutInflater.inflate(LayoutInflater.java:515) at android.view.LayoutInflater.inflate(LayoutInflater.java:394) 删除绑定声明修复了问题,但我没有自定义视图. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |